With this trading frenzy on gdax and on coinbase itself, why do they need round D? They are charging hefty fees on coinbase, and some fees on gdax too. It's "pu

With this trading frenzy on gdax and on coinbase itself, why do they need round D? They are charging hefty fees on coinbase, and some fees on gdax too. It's "pure play" , there's no fixed real world expenses